Box-covering machine.



Patented July 11, 1916.

v1. P. MARKERT M1 s; BOLGER.

Box covEmNG` MAc-H|NE.- APPLICATIQN FILED IAN. 4. 1913. 1,190,928.

WIT/VESSEL? J. P. MARKERT & R. Sl BOLGER.

BOX COVERING MACHINE.

APPLICATION min 1AN.14.`1913.

Patented July 11, 1916.

1 SHEETS-SHEET 2.

v wharf/@Mgr 1. P. MRKERI L R. S. BOLGER.

BOX COVERING MACHINE. i

' APPLICATION man 11111.14. 1913.

1,1 9,928. Patented my 11, 1916.

1 SHEETS-SHEET 3.

J. P. MARKEN 6L R. s. BOLGER,

BOX COVERING MACHINE. APPLICATION man 1AN.'14. 1913.

mmm July 11,1916.

7 SHEETS-SHEET 4.

l. P. MARKERT &"R. S.. BOL-ER.y

sox cdvenmc MACHINE.

APPLICATION FILEDVIANLHw |913.

Patented my 11, 1916.

1 SHEETS-SHEET 5 V.|..P. MARKERT & R. S. BOLGER.

oxcovEmNG MACHINE. APPLlcATloN FILED m11. 14. 1913. 1,190,928.

Patented July 11, 1916.

I SHEETS-SHEET 6.

w/TNEss/Ss IQP. II/IAIIKERT @I II. s. BOLGEII.

Patented July 11, 1916.

7 SHEETS-SHEET I.

INI/Emana @Mar/ieri' 'UNITED STATES rATENT OFFICE.

JonN P. MABKERTAND RoBEm s. BOLGER, oF NEW Yoan, N. Y.; SAID BoLGEnyAssIGNon To SAID MARKERT. l v

BOX-COVERING MACHINE.

Specification of Letters Patent.

Patented-July 11, 1916.

Application led January 14, 1913. .Serial No. 742,080. I

To all whom it may concern:

Be it known that we, JOHN P. MARKERT andV ROBERT S. BoLGER, citizens ofthe United States, residing in the counties of Kings and Queens,respectively, in the, city 'of New York and State of New York, haveinvented certain new and useful Improve- -ments in Box-CoveringMachines, of which the following is a full, clear, and exactdescription.

' This invention relates to box covering machines of that general classin which the formed boxes are fed to suitable clamping heads .which gripthem and convey them by stages through the machine, in the course ofwhich a covering of sheet material, suchv as paper, is applied andsecured to the exterior of the box, afterA which the box is' ,ejectedfrom the machine.

The general type of machine described herein and illustrated in theaccompanying drawings is one which is already well vknown, but theimprovements which are claimed in this application for patent aredesigned to perfect the machine 1n various detalls of construction andoperation. In order to give a full understanding of theseimprovements,`it has been considered necessary to describe andillustrate features of the machine as a whole which are not to beclaimed herein. What these improvements are will be fully brought out inthe description which follows, and specifically in the claims appendedhereto.

With reference to the accompanying drawings, Figure 1 is aside elevationof the machine with some parts broken away and others omitted, butshowing all that is necessary in order to illustrate our improvements;Fig. 2 isa vertical central section of the machine taken on a planeparallel to the view shown in Fig. 1; Fig. 3 is a sectional detail ofthe lower plunger taken on line m-m of Fig. 2; Fig. 4 is a detail of oneform of brush or wiper and its holder; Fig. 5 is a plan of a portion ofthe brush-holder and` brushshowing its" cooperation with the side of abox; Fig. 6 -is a face view of the brushholder or a part thereof; Fig. 7is a rear elevation of one of the cover-applying units;v

on a plane parallel to the view shown in -Fig. 7; Fig. 9 is an enlargedsectional view o f the unit taken at right angles to the Sectionshown'in Fig. 8 and through the middle thereof; Figs. 10, 11,12 and 13are vertical `transverse central sectional views of the the endtucker-inger and its mounting; Fig.,

15 is a detail thereof in side elevation; Fig. 16 1s a plan oftheresisting-bar and its v mounting; Fig. 17 is a front elevation of thesame; Fig. 18 is a section through the middle of the resisting bar onthe line M, M, Fig. 17; Fig. 19 is a face view of one of the contactplates on the resisting bar; Fig. 20 is va plan of the box-ejectin'gmechanism; Fig. 21 is a side elevation of the same; Fig. 22 is an endelevation thereof; Figs. 23 and 24 are, respectively, a side view and asectional plan of theupper box-clamping head; Figs. 425 and 26 are frontand end views of the margin wiping brush and holder; and

lFigs. 27 to 34 villustrate the various stages in the process ofapplying the covering ma'-` terial to boxes having one wall higher thananother.

The main frame of the machine is indicated by 1, in front and at theltop of which, being to the left in Fig. 1, is ixed a feeding table 2 infront of which an operator is to stand who delivers boxes of generalrectangular shape such, forIl instance, as is seen in Fig. 5, and thecover blanks therefor to the mechanism which is to receive them andperform the various operations of applying the covering material to theboxes. Midway across the .top ofthis framevl is a yokeshaped frame' 3having at its middle point a bearing 4 forthe upper plunger-rod 5 whichreciprocates therein through the center of the machine. The upper end ofthis rod is secured to an arm 6 which reaches to the side of the machineand is there attached to the upper end of a vertical reciprocatingrackbar 7 ,moving in a suitable guiding bracket 8 xed to the side offrame 1 at the top. Within this bracket 8 are housed a train ofmultiplyinggears 9, one end of which engages with the rack 'z andtheother end with a rack traveling in a plane parallel to that of the rack7 and also guided in the bracket 8. rlhe lower end of rack 10 isconnected to the end of a bell-'crankdever 11 by a link 12. rPhebell-crank lever is fulcrumed upon a shaft 13 and its arm carriesaroller 14, which runs in a cam-groove 15 in a disk 16 mounted on thepower-shaft 17 of the machine. This power-shat is driven through gears18 and 19 from the main shaft 20, the latter being adapted to beconnected with a suitable source of --power by any .suitable means as 21when the foot pedal 22 is depressed, the machine running as long as thetreadle is held down and stopping when it is allowed to lift under theaction of the spring 23. On the .shaft 13 there is also keyed a secondbell-crank lever 24, one end of which' carries a roller 25 shown indotted linesin Fig. 1 which plays in a camgroove 26 on the opposite sideof disk 16. The other arm of the lever 24 is connected by means of alink 27 with one section 28 of a two-part vertical plun er mounted toslide in a fixed guide 29. ithin this plunger section 28 is the secondplunger section 30 adapted to slide vertically therein. The section 28carries two sprocket-wheels 31 and 32 mounted to turn in brackets fixed,respectively, at the extremities of said section, and around thesesprocket wheels passes a chain 33 which is fixed by means of a screw: 34to the plunger section 30. The two ends of the chain 33 are anchored toa bracket 35 Awhich is attached to the fixed guide 29, an adjustmentcontrolled b nuts being provided at the ends of the c ain wherebyD slacktherein can be taken up. With this arrangement, it will be seen thatwhen the `plunger section 28 is raised or lowered, the section 30 iscarried therewith, but at a speed twice thatf'of the section 28, due tothe fact that the chain which is connected to the section 30 and has itsends ixed at 35, vcauses the sprocket wheels to rotate and impart asecondary motion to the section 30. A sectional or telescoping plungerof this character provldes. a long stroke for the plunger as a wholewithout the necessit of extending it below the base of the mac ine.'lhepupper plunger-rod 5 is provided at its lower end wlth abox-clamping head or block 36, the details of which are shown in Figs.23 and 24. The two opposite sides of this block are'cut away, as shown,at 37, for a purposel which will hereinafter appear, and the block isattached to the end of the lunger in such a vmanner that it may be leveed w1th respect to the platen on the lower plunger hereinafter referredto. This constrution consists of a sleeve 38 which is first passed overthe end of the plunger, the passage therethrough being of the same sizeas the end dlameter of nieces@ posed below the lower surface of the`head 36;

apart. The plunger v passes.

then a split washer 42 acting as across-head is inserted laterally intoan annular groove in the end of the plunger, after which the head islowered until the washerand the end. of the plunger are fully housedwithin the countersink in the face of the head. rlhen the sleeve 38 yismoved down andclamped in position, and if the head 36 requires tiltingin any direction in order that it shall coperateproperly with the lowerplunger platen, this is done by set-ting up some of the screws 40 andslacking others until the proper level is obtained. rlfhe sleeve 38 isrigidly clamped to the end of. the plunger by means of the bolt 43. Thetil-tlng ofthe head upon the/end of thelplunger is permitted by reasonof the enlarged vpassage in the head and the whole structure becomesrigid when once set by .tightening up on the set-screws 40.v The lowerplunger platen, which is merely a -plate 44, removably fixed to theupper end of the section 30 of they lower plunger, is located directlybeneath the upper plunger 36 and they are adapted to act together tohold abcx firmly while the covering is being applied thereto.` Forthispurpose the box is first deposited upon the lower plunger, whereupon theupper plunger passes down into the box and clamps the bottom thereofagainst the lower plunger.

From the construction described it will be seen that the 'two plungersare positively raised and lowered 'in a certain varying relation to eachother controlled by the shape of the cam grooves 15 and 26 in the disk16. ln order to, counterbalance the weight of the plunger parts andracks, the springs 45 and 46 are rovided, the former acting through arod 47 and crank 48 keyed on the shaft 13 and the latter acting upon therack-bar 10.

This machine is provided with four units arranged in pairs, one pairindicated generally by 47 and 48, Fig. 1, being locatedin the upper partof the machine while the other pair is located ,directly beneath them,only one of which, 49, is illustrated in the assembled drawing, Fig. 1,and the opposite unit 49 'on Fig. 2. One pair of these units while theother pair of units which operates directly after the first pair haveoperated, are adapted tc apply other portions of the covering materialto the ends or other twosides of the box. These operations are performedwithout turning the box around, the lpairs of units being arranged atright angles to each other, the upper pair, for instance, beingtransversely arranged to the machine as a whole, while the lower pairare longitudinally arranged with respect thereto. The construction ofeach of these units is substantially the same, those comprising theupper pair being -exactly alike while those comprising the lower pairare like those of the upper pair except that the thumb-holing andend-tucking devices are omitted therefrom.

In the operation of the machine,the boxes to be covered are carried fromthe upper part of the machine downward through the center by aninterrupted motion which afords an opportunity for the ,devices in theunits to act'upon them. In order that the machine may be'adapted tooperate upon boxes of various sizes, that is, of various length andwidth, the units are bodily movable or adjustablewi'thin the frame ofthe machine. Thus the frames of the units 47 .and 48 are mounted upontworack-bars,

i of these `being mounted in one side of the main frame, while the otheris mounted in the opposite side; both ofthe racks being shown in'F ig.7. In the frames of the units, pinions 52, 52 are mounted and are inengagement, respectively, with the' racks 51 and 50. These pinions maybe turned by means of a Wrench applied to the squared ends 53v of t-heshaft 60, vand thereby cause the unit as a whole to travel along theracks,

the, motion thereon being steadied by the elongated bearing 54 whichextends from the frame of the unit and surrounds the rackbar. Thus theunits may be caused to approach or recede from each other to any desiredextent depending upon the size of the box which they are to operateupon. The same arrangement ofl rack-bars and pinions is used to adjustthe lower pair of units, the bars being indicated by 55 and 56 (Fig.

Y 2), andthe pinions by 57.

In the frame of each unit is a shaft 58, and above a tie-rod 59 whichholds the upper part of the frames ofthe units together. In the lowerbearings ofthe unit frames is mounted the unit adjusting shaft 60. Theshaft 58 is driven through a bevel-gear 63 which derives its power fromthe main shaft 17 through the shaft 17 and gear 172. In. the case of thelower pair of units, it will be seen that the shaft 17- is splined andcarries two sliding beveled gears 64 and 65 which, respectively., drivethe bevel-gears 63 "von the ends of the shafts of each unit. With thisarrangement, the transmission of power from the main shaft to the unitsis not disvarranged when the units are bodily adjusted Extending betweenthe end frames 61 and l 62 of'each unit is an upright plate 66 bestshown indotted lines in Fig. 8. The ends of this plate are fitted toslide in suitable guides formed in the end frames 61 and 62 and toimpart motion to the plate it carries two rollers 67, one at each end,which are acted upon by cams `68-68 mounted on the shaft 58. These camsforce the plate toward the center of the machine, while va spring 69,shown in Fig. 13, pulls the plate backward or keeps the rollers againstthe face of the cam. The function of this plate is to carry a slide 70which is mounted at the middle on the front of the plate in suitableguides thereon, in which guides the slide is adapted to move verticallybeing connected with a spring 71 which tends to draw it Vdownward andhaving at its upper end a rearward projection 72 provided with a toe 73resting ,upon the curved surface of a finger 74 which projects from Vayoke-shaped bracket 75 mounted to turn on t-he-upper tie-rod 59. Thisbracket carries a roller at the end'of a crank, 76 which rests againstcam 77 on shaft 58. Attached to the front face of the slide 70 is abracket 78 which extends forward and terminates in a downward projection79, to which is attached a horizontal brush or wiper 80, a face view ofwhich is shown on'one of the lower units in Fig. 2, the brush or wiperextending rearward or outward with respect to the center of the machine.The bracket`78 carries a tappet 8l in the form of an adjustable Screw,the

Through the frame 86 a passage is provided for a thumb-holer tube 87which projects from the front end of the trame and is pror `vided on.its under side with a transverse semicircular notch 88 adapted to fitover the edge of a box. The rear end of this tube is enlarged andprovided with a detent 89, the enlargement forming a. socket for aspring 90. Inside of the tube 87 is a bolt 91 having a cutting rim atits forward edge and at its rear end carrying a'roller 92 and a latch93. The latch normally rests in engagement with thedetent 89 so thatwhen the bolt 91 is moved forward, the tube 87 will be carried with it.

94 is a spring located in a socket withir the frameI 86k and surroundingthe tube 87 which becomes compressed when the tube and the cutting bolttogether move forward. i Y 0n the upper side of the frame 86v is a camsurface 95 which is engaged by the end of the latch 93.when thelatter'moves forward, to release the tube 'andthus permit the cuttingbolt to move forward independently of the tube and across the-slot 88therein. The spring 90 which is located between the end of the tube andthe end of the cutting bolt is stronger than the spring 94, so that whenthe tension which has been stored in spring 94- by the forwardmovement-of the tube is free' to act upon the tube when the latch israised, it will not be strong enough to force the tube rearward againstthe spring 90. This spring 94, however, does serve to return the tube toits normal position shown in Fig. v9 after the cuttingbolt has beenpermitted to recedev to the position shown in said figure. rl`he latch93 is heldin engagement with the detent 89 yand the thumb-holer frame istilted downward at the rear by a 'lat spring 95 secured lto the top ofthe carriage 83. The roller 92- on the cutting bolt rests against theface of a vertical plate 96 pivotally connected at its upper and lowerends with the extremities of two cranks 97 and 98 which are. pivotallyhung upon lthe' tie-rod 59 and shaft 58 respectively, thus affording aparallel movel ment to the plate 96. ln order to swing this vslot 1n thetube.

plate forward'and thus operate the thumbholer, the upper end isconnectedby means of a link 99 with a curved crank-arm 100, loosely hungon the unit adjusting `shaft 60. This crank arm 100is adapted to beconnected with another crank-arm 101 by means of a removable pin 102, sothat the two arms will move together. The arm 101 is part of abell-crank lever of which the other arm is indicated by 103 andcarries'at its extremity a roller 104 which is actuated by a cam 105 onshaft 58. Springs 90 and 94 in the thumb-holer 'keep the roller 92against the plate 96. In the operation of the thumbholer, the plate 96forces the tube 87 forward to the position shown at 106 in dotted lines(Fig. 9) and thereafter the tappet 81 strikes the to of the frame 86 ofthe thumb-holen and ti ts the forward end down to the position shown indotted lines 107 and at about the same time the latch 93 is lifted andthe facelate' forces the cutting bolt across the By removing the pin 102and thereby disconnecting cranks 100 and 101 from each other, thethumb-holer is thrown out of operation.

The two upper units each com rise two end tucking iin ers, the functiono which is to tuck or fold lnward the laterally-projecting edges of theside portions of the wra pery immediately beforethe end portions o theself-locking in the meaeee `wrapper are folded or wiped up against theends of the box. These end tucker fingers comprise vertically arrangedplates or blades 108 which are fastened to a swinging thrust-bar 109.This bar is pivotally connected to the ends of two parallelcrankarms-110 and 111, the other ends of such arms'being pivotallyattached to a carrier 112, this arrangement affording a parallel motionto the thrust-bar 109. The pivot pin which connects the arm'1'11 withthe bar 109 is attached to the bar and projects through the eye in theend of the arm some distance, the projecting portion being surrounded bythe spring 111 which permits the bar to swing laterally slightly, therebeing sutilcient play in the pivotal connection between the end of arm110 and the 'bar to permit of such lateral movement. The carriage 112 ismounted upon two threaded rods 113 and 114, thel threads of which arerespectively right and left-handed and the' rods being geared togetherat 115 so'that when .one of them is turned by means of the handle 116,they will both turn together and the carriage which is provided withcorresponding threaded openings will be adjusted along their length. Abracket 117 attached to the carriage carries a stud 118 which bearsengages said stud at the end of the forward movement of the thrust-barand deflects the blade 108 out of contact with the box after it hastucked in' the ends of the cover. lmmediately behind 4the thrust-bar andextending along the length, of the rods 113 and 114, is a rocking-plate120, against the face of which the thrust-bar 1,09 is held by the spring121, which tends to force backward one of the parallel arms 110. 'Thisrockingplate 120 'is'pivoted upon a shaft 122 which carries a crank-arm123 (Fig. 9) which is engaged by an arm 124 of a bell-crank leverpivoted upon the adjusting shaftV 60, the other arm 125 of which (Fig.7) carries a roller whichis actuated by cam 126 on shaft 58, the rollerbeing held in engagement with said cam by spring 127 which is attachedto.

.simultaneously on the two corners of the box presented to them. Byturning the handle 116, the position of the fingers can be adjusted fordifferent sizes ofboxes and are osition to which they are adjusted. VInFigs. 9 'and 14 the mode of operation of these fingers is illustrated bythe positionsv shown in dotted lines. When the box is presented to thenger as shown in Fig. 14 the side of the cover has been folded intoplace and the edge thereof turned down over theedge of the box, leav-ving the projecting ends 128 of the cover to cover and disarrange it.

On top'of eachof the units and projecting upward from the end frames 61,62

thereof, are brackets 130 in which are held I adjustable rods 131supporting at their forward extremities a bar 132. This bar is 'adaptedto carry a brush-holder 133 shown in detail in Figs. 5, 6 and 9.r TheVbrushholder comprises two metal plates, channel shaped in cross-section,which are secured to the back of the bar 132 by means of screws 134 andproject thence around the edges of the bar and vafford a passagebeltween them and. the face of the bar into which to slide anyappropriate number of brush sections 135, each of the sections beingcomposed of a rectangular block or. head adapted to fit into the grooveo r channel of 'the brush-holder and carrying bristles or wipingmaterial of any suitable kind which projects outward from the channel.When a number of these sections-areapplied close together in a groupinthe holder, they serve,l

j in effect, the same as a single brush, and by makingthem in sections,we are able to readily alter the length of the brush to conform to thelength of the side of the box upon which it is to operate. Thus, yinFig. 5, it will be seen that the four sections of brush thereillustrated comprise, in effect, a` single brush slightly less in lengththan the side of the box upon which they are to operate. The importanceofa sectional brush for this purpose isemphasized when it is understoodthat the brush, in order to perform the best work, must in no case belonger than the side of the box against which it is to loperate andshould for the best results be somewhat shorter. The

- reason for this is that if the brushv extends beyond the corners ofthe box yin the wiping operation, the end bristles will strike the endfiaps of the cover which are indicated in Fig. 5by 136 and also theextensions 128.

Thiswill disarrange these parts ,of the cover desired. The brushes usedin the two lower units, one of which is seen in Fig. 2 at 135,

are made up of sections deeper than those used in connection with thetwoupper units,

and they are preferably-attached to the supporting bar 132 in adifferent manner' from those heretofore described. Fig. 4 'shows the'brush 135 and its mounting indetaiL It will be seen that the brushsection is` provided'with a spring clip 133 which is adapted to passover the top and rear of the supporting bar 132 and engage with theunder edge thereof. By this arrangement the sections can be adjusted toany position on theY 'bar and readily attached and removed.

These sections of the brush 135 are made deeper than those Vfor theupper unit for a purpose which will hereinafter appear. Y

In front of each. of the units extends a cross-bar 137 which issupported on one side of the machine by posts 13 8. The end of the bari's provided with a boss 139 which passes over the post and is adaptedto be clamped thereto at any elevation towliich it may have beenadjusted, by ithefbolt 140. In order to vertically raise an'd lower thisbar, a hand-screw 141 is provided'whichthreads through the casting 142rin which the post is fixed and engages, with Athe boss 139. The

casting 142 embraces one ofithe rack-rod`s upon Whichthe unit with whichthe b ar is associated rides.' In ,the case of ithe ,lowerV unit shownin Fig. 2, this rack-rod is indi'- I .cated by 56, and in the case `ofthe upper units, the rack-rod is indicated by 50. The

free end of the bar 137 is provided with a set-screw 143, which bearsagainst a'lplate 144 attached to the frame of the unit. In

order to be able to adjust this bar 137 toward and away from the centerof the machine, it is made tol slide freely along-the rack-bar and canbeclamped at any position `thereon by means of the bolt 145. When Vthisbolt is loosened, the entire-bar 137 with its supporting parts can bevmoved along bodily. vAfter it is thus generally located,

it lcan be more finely adjusted in positlon by rotating the pinion 146by .-means 0f a wrench applied to the stud 147, which pinion meshes witha second rack on the side of the bar 56, causing the entire bar 137and'lts attachments to move to the exact position desired. When thisadjustment is obtained,l

the set-screw143 is adjusted so that its tip will rest upon the plate144, without causing any spring or bend in the bar 137. This bar we callthe resisting bar, the function of it being to .furnish a support forthe outside of the wall of the box while the brush iS, i

pressing against the opposite or inside of' the box in theoperation ofwiping the cover into place.l

Instead of permitting the'side ofthebox to rest directly against theface of the resisting bar, we prefer to insert contact plates 148between the box and the face of the bar. These contact plates may be ofvarious forms, but in general'consist of strips of' metal, shown indetail in Figs. 18 and 19, which are bent so that their extremities formhooks 149 which will engage in grooves 150 formed in the upper and lowerfaces of the resisting bar. These plates bow outward from the face ofthe bar itself to prevent the wall ofthe box from resting against thebar. The reason for preventing Contact between thev box and the face ofthe bar, is that the bar soon accumulates paste which is squeezed outfrom under the edges of the cover by the brushes and after a while soilsthe box or cover in passing it. These contact plates 148, which areadjustable to any position along the face of the bar by *uerely slidingthem in the grooves 150, can be placed at points where the paste willnot reach them (as seen for instance in Fig. 16) while any other platesthat may from each vother.

not be in usey may be moved ofl to one side (as for instance thoseindicated by 148'). Thev resisting bar'used in connection with the twoupper units is provided with a depression .in its upper edge at themiddle point of the bar, as'see at 151 in Fig. 16, which permits thethumb-holer to be projected across the path of the bar, but in the-resisting bars forvthe'two lower units, this is not necessary sincethere is 'no thumbholer provided in these units.

Incorporated with the two lower units is the delivery or ejectingmechanism for the' boxes after. the covers have been applied to them.This mechanism is shown in Figs. 20, 21 and 22. Mounted upon the floorplates 152 of the two lower units, respectively, are the bearingbrackets 153 and 154 which support a shaft 155 which is provided with aspline 156 enabling it to slide through the bearing in the bracket andthus permit of the two units moving toward and away This shaft carriestwo sprocket wheels 157 and 158, the former being" also splined to theshaft vfor -the same j purpose before mentioned; One end of thewardly-curved ends 169.v These angle rails shaft carries a bevel pinion159 by which it lis driven. Chains 160 pass over the sprocket wheels andextend to the opposite ends of the units, respectively, where they passover two other sprocket wheels 161 and 162 which are mounted 'on studs163 supported in bearing brackets 164and 165. These chains are. eachprovided with a pusher finger 166 which are ,placedfthereon Adirectlyopposite and projecting inward toward each other. Ar- Y ranged paralleltothe chains Aand just above the fioor of the 'unit-are twov angleshaped rails 167 and 1,68xwhich extend the l fulllength of the units'and-'te'rrninatev in downmachine. Y

1n Fig. 1 a box to which the cover hasA Macnee 176 which meshes with thepinion 159. The

shape of the groove 171 in the cam is such that the arm 173 isoscillated back and forth once during each rotation of the shaft 58, themotion in one direction being somewhat slower 'than it is in the otherdirection. This oscillation causes the. chains 160 to travel thedistance between the two sets of sprocket wheels, first in oneIdirection and then in the other, and in doing so to carry the fingers166 which are attached to the lower lead of the chain, from the extreme'position to the left as seen in Fig. .20 in dotted lines to the extremeposition to the right as shown in vfull lines, and then return.V 1nmoving to the right, the fingers strike against the box which has beenin the meantime positioned adjacent to the tracks 167 land 168 andcarries it to the delivery end of the tracks, the next succeeding? boxstriking it and'forcing it finally from the been applied during itspassage through the machine is seen .located upon the tracks `167 and168,v and about to be ejected from the machine by the chains 160 andpush fingers 166, the lower plunger 44 having dropped below the box andthe upper plunger 3,6 having lifted out of the box. As soon as the boxhas been moved out of the path of the plungers, the cam-disk 16 causesboth.

plungers to-rise to the upper part of the machine, the lowervplunger-head stopping practically on a level with the top of the -mainframe 1, the upper plunger rising sufciently high above this level toadmit of the introduction of a 'box between the two plungers. Either theoperator or a suitable automatic feeding i mechanism then places agummed wrapper with v`a box centered thereon directly over or upon thelower plunger, the two lplungers remaining *stationary by reason of theshape of the cam in the disk 16 long enough to Apermit this operation.Then the upper plunger lowers into the boxY and clamps itsbottom againstthe lower plunger; immediately, the box with its wrapper thus-clamped iscarried downward to the position Vshown in Fig. 9. Tndoing so, thehorizontally protruding sides of the wrapper strike the stationary*brushes 135 on the two upper units and are wiped upwardand intointimate' contact with the side walls of vlthe box as shown in Fig. 9.When the box reaches 4the position shown in Fig. 9, the cam 16 halts theplungers temporarily and during this interval the cam on shaft 58 of thel unit acting upon roller 67 throws the plate 66 forward; this carriesthe slide 70 and the bracket 78 with brush 80 forward, which forwardmovement is, by reason of the curved surface on the linger 74, in acurvilinear direction, {irst moving upward slightly and then downward.This causes the front of the extremity of 'the brush-holder to strikethe upwardly-projecting margin ofA lowers at the same time causing thebrush 80 to wipe the .wrapper margin down against the inside ofthe wallof the box. Immediately thereafter raised parts of cams 68 move plate 66farther inward causing brush 80 to retreat toward the center of the boxand out of contact with the margin of the wrapper which it has justwiped into place, as seen in Fig. 13. Thereupon, the roller on arm 76moves out of the notch in its cam, causing the slide 70 with the brush80 to be lifted out of the box without a reverse wiping action upon the`turned-over margin ofthe wrapper, and at the same time the cams 68actuating the plate 66 permit the plate to be drawn rearwardl by spring69 thus returning the brush-holder to its starting position. While thebrush 80v is pressing against the inside of the wall ofthe box andwiping the margin of the wrapper against the same, the side of the boxis prevented from bulging. outward by the resisting-bar 137 carrying theclips upon 'which the wall of the box is resting. At`

the same .time that the brush 80 is moving forward to wipe over themargin of the wrapper, the thumb-holer tube8 7 is being forced forwardto the dotted line -position 106 (Fig. 9). and as the brush movesdownward to wipethe margin of the wrap- -per against the inside wallofthe box, the

tappet 81 carried by the brush-holder bracket strikes the top of thethumb-holer frame and tilts its forward end downwardA with the retreatof the brush from the inside wall of the box, the latch 93 of thethumb-holer is lifted andthe cutting bolt 91 is -thrust forward acrossthe notch 88 and and 90 `to withdraw the thumb-holer tube andcutting-bolt out of rangeof the next box which is to pass through themachine.

It will be understood of course that the same operations above describedare simultaneously carried on by the two upper units, the two oppositesides of the box being treated in the same'way. When these operationshave been completed the cam 16 moves the plungers with the box betweenthem to a position shown in dotted lines (Fig. 9) opposite theend-tucking fingers where there is another slight halting to permit theendtuckers, two in each unit, to pass inward and fold the projectingends 128 (Fig. 5) against the ends of the box, this motion of thetucking fingers 108 being accomplished by the rocking-bar 120 undertheaction of cam 126 on the shaft 58.' Having accomplished this,

'the box is carried by the plungers immediately between the deep brushes135 ofthe two lower units and these act to fold or wipe upward the ends136 (Fig. 5) of the wrapper against the end walls of the box, the uppermargins of the wrapper projecting upward beyond the edge of the box inthe same' manner as the edges ofthe side wrappers were left standing vbythe brushes 135. On account of the depth of the brushes 135 they act atonce after the end-tuckers have performed their function and remain incontact with the end walls of the box for a period which insures theadhesion .of the pasted wrapper thereto or the h oldlng of the loosewrapper until the margin thereof is about to be acted on by the brush80. The motion past these brushes is, however, continuous until the boxarrives at a position units. In this new position the box is againhalted until the brushes 80 of the two lower units fold over and wipedownward the projecting margin of the end wrappers against the inner endwalls of the box, this operatlon being accomplished in the same mannerand by the same kind of mechanism as it was accomplished by the upperpair of units. The

operation of covering the box is then com.

plete and the plungers next carry it downward until it is about on alevel with the rails 167 and 168, as shown in Figs. 1 and 2.

to a position correspondingtothe new loca- By further action of thecam-disk 16, the two plungers separate, one moving downward while theother moves upward to free the box, while in the meantime the cam 170-actuates the segment 176 causing the chains 160 to move and carry thefinger against the box to slide it from the lower plunger to the railsand then to the rear of the machine as shown in Fig. 20. In the meantimethe plun- Vboxes after they are ejected from the machine.

We wish tol particularly emphasize the operation of the brushes 80 whichfold over the margin of the wrappers and wipe them downward against theinside ofthe boxes. On account of the curvilinear direction of travel ofthe brushes, starting as they do from a low point on theoutside of thebox, rising over the edge of the box, and then passing downwardperpendicularly, they may be depended upon to properly fold over andsecure the margin of the wrapper notwithstanding the fact that the pasteor gum which is applied to them may have caused the protruding margin tocurl and get out of shape before the box arrives at the position wherethese brushes act. In other words,

' by this peculiar motion of the brushes, they reach under theprojecting margin and lift it, if necessary, beforeV bending it over theedge of the box.

In adjusting the units for action upon different sizes of boxes, it ispointed out that a preliminary adjustment of the resistancebars 137 canbe very quickly accomplished by feeding a box of thesize to be actedupon between them and adjusting them up into contact with the boxlocking them in this position. Having done this, it will be foundconvenient Yto adjust the units as a whole up tion of theresistance-bars.

In connection withthe box delivery devices, it will be noted that thesedevices are carried upon the two@ lower units and are automaticallyadjusted at the same time that the units are adjusted, consequently nochange is necessary in the delivery device to adaptit to receive andeject boxes ofdiierent sizes, inasmuch as the act oiy adjusting 'theunits at the same time adjusts the delivery devices.

Since the plunger-head which enters the moches box is of smaller sizethan the box itself, no picking oii mechanism is required to remove thefinished box from the head, since gravity alone accomplishes this. Anysuction that might take place between the box and the lower side of theblock is prevented by the lateral air passage 4:1. Y

The mechanism of each unit is adjustable independently of all of theothers. For instance, the bracket 78 carrying brush 80 is adjustable inheight uponthe slide byv means of a bolt 200. The thumb-holer islikewise adjustable vertically by means of the screw `8st. Theseconstructions make it possible for the machine to act upon boxes havingone or more sides higher than the others. Thus, in either of the twoupper units, the brush 80 and thumb-holer may be adjusted for a certainheight of side wall of box while in the other unit these two mechanismsmay be adjusted for a dierent height of side wall of box, and the samething may be done in respect of the two lower units.

Figs. 27 to 34 illustrate the different stages in the operation ofapplying the covering to a box having two opposite'sides of. dierentheight. Fig. 27 shows the box 206 posivtioned on the wrapper 207 andreadyto be clamped by the plungers and started through the machine; Fig.28 vshows the box after two sides of the wrapper have been wipedthereon; Fig. 29 shows'the margins 208 of these two sides turned inward,and at this stage we call attention to the portions 205 of the marginswhich have been turned in by the right-angled portions 80 of the brush80 (Figs. 25 and 26); Fig. 30 shows the margins 208 wiped downward intocontact with the :inside wall; Fig. 31 shows the ends 209 ont the sidewrappers turned in against the end walls of the box'by the tuckerfingers; Fig. 432 shows the end wrappers 210 wiped upward against theends of the box; Fig. 33 shows the projecting margins 211 of the endwrappers turned over, and Fig. 34: showsV the end margins wiped downwardagainst the inside of the walls of the box, thus completing theoperation.

The construction whereby we areable to l 1. In a; box covering machine,the combination-of a pair of plungers between which the box is clampedand by which the same is j carried through the machine, said plungerslgitanas together having a synchronous reciprocatory motion, apower-shaft, and meansl whereby said plungers are independently andpositively driven in both directions from said power-shaft,substantially as described.

2. In a box covering machine, the combination of two plungers betweenwhich the box to be acted upon 'is clamped, one of `said plungers havinga telescoping stem, a chain l attached to one of the members of saidstem, a pair of wheels carried byk another member of said stem and overwhich said chain runs, the chainbeing anchored at one fixed point in itslength whereby the actuation of one of the plunger-sectionsin eitherdirection will cause the other to positively move in a correspondingdirection but at a difa ferent speed, substantially as described.

3. In a box covering machine, a box clamping plunger comprising a stemand head, the latter having an opening of larger diameter than the stem,through which the stem passes, a sleeve surrounding said stem andprovided with a flange substantially parallel to the head, said iangeprovided with a plurality of adjusting screws bearing against said headwhereby the angle of the head with respect to the stem may be adjusted.

4. In a box covering machine, a box clamping plunger comprising a stemand a head, the head having a central orifice countersunk on its workingface, the stem adapted to pass through said orice, a cross.-

head engaging with said stem and located,

in said 'countersinln and a sleevecarried by the stem and provided withadjusting screws bearing upon said head. f

5. In a box covering machine, a plungerhead adapted to enter a box andrest against the bottom thereof, said head having cutaway portionsexposing the'bottom of the box, in combination with means for cuttingthumb holes in the box, said means being located in the planes of saidcut-away `por-` tions, for the purpose set forth.

6. In a box covering machine, a device adapted to fold the margin of thecover over the upper edge of the box, said device hav- 'ing aVcurvilinear movement while in engagement with the cover margin from al'ow point on the outside of the box below its upper edge, over theupper edgel thereof to i a point on the inside of the box below itsupper edge, substantially as described.

7 In a box covering machine, a brush for folding the margin of thewrapper over the edge of the box, in combination with means forimparting to said brush a curvilinear motion from' a position outside ofthe box and below its ed e, over the edge thereof, thence downwarinsidefof the box, and finally toward the centerl of the box, for the Apurpose set. forth.

i8. .In a box covering machine, a device for folding the margin of thewrapper over the edge of the box, a slide on which said devicel iscarried, a plate carrying said slide and Vhaving a motion at rightangles to that of the slide, means for imparting motion to said plate,and independent means for imparting motion to said slide whereby acompound motion is imparted to the said device for the purpose setforth.

9. In a box covering machine, the' combination of means for pressing thecovering material against the side of the box, and a stationaryresistance-bar adapted to support the side of the box during suchoperation, said resistance-bar being mounted and adjustableindependently of said pressing justable pressure and spacing lates,means A for presenting the exterior sur ace of abox to said plates, andmeans for forcing the interior surface thereof toward the plates.

12. In a box covering machine, a resistance-bar provided with a pair ofygrooves in opposite faces, in combination with a pluralty ofcontact-plates embracing said faces and having edges engagingrespectively with said grooves and adjustable to different positionstherein.

13. In a box covering machine, the combination of a resistance-bar, asupporting-post with which" the bar has sliding connection, a rack-barupon which said post is supported, means for vertically adjusting thebar upon said post, and means carried by the ost and adapted to'engagesaid rack-bar 01' adjusting the postalong the rack-bar, substantially asdescribed.

14. In a box covering machine, the combi-l ico4 nation of an end-tuckingfinger,'a thrust-bar V to, which the same is attached, a carriage towhich the bar is pivoted, right and left screws working through saidcarriage, and

gearing connecting said screws whereby the rotation of one of them willadjust the position of the carriage along the screws.

15. In a box covering machine, anv endtucking finger in combination'witha thrustbar to whichl the same is attached, means for imparting aparallel reciprocatory move- A ment to the thrust-bar comprising twoparallel levers to which said thrust-bar is pivoted, and means fordeiecting the finger laterally at the end' of its forward stroke.

'16. In a box covering machine, the combination of an end-tuckinglinger, a reciprocatory bar to which the nger is attached, said barprovided with a cam surface, and a fixed obstruction in line with saidcam surface whereby the engagement of the same by the cam will causealateral movement of the bar. v

17. In a box covering machine, the. combination of a pivotally mountedthumb-holer, and a wrapper margin folding device hav-- ing areciprocatory motion in the plane of the tilting motion of thethumb-holer on its pivot, said device carrying a tappet adapted tostrike the thumb-'holer and swing it on its pivot, for the purpose setforth.

18. In a box covering machine, the combination of adjustable mechanismfor applying the covers to the boxes, and mechanism' for automaticallydelivering said boxes out of the machine after they have been covered,and means whereby. the adjustment of the covering mechanism fordifferent sizes of boxes will automatically adjust the deliverymechanism for the same sizes of boxes. Y

19. In' a box covering machine, the combination of two units, eachcomprising coverapplying devices adapted to operate simultaneously uponopposite sides of a` box, a delivery mechanism. for conveying thefinished boxes out of the machine, said delivery mechanism ,being formedin two parts mounted, respectively, upon said" units, and means forbodily adjusting said units to conform to different sizes of boxes.

20. In a box covering machine, a delivery device comprising two railsupon which the inished boxes are delivered, said rails being adjustabletoward and away from each other for differentsizes of boxes, two endlesscarriers provided with means for engaging with the 'boxes and arrangedparallel to the rails, two pairs of wheels,one for each endless device,a shaft carrying 'one of each pair of said wheels, means whereby thewheelsl may be adjusted toward and away from each other withoutdisconnecting them from the shaft and means forimparting a reciprocatorymotion to said carriers.

21. In a box covering machine, a delivery device comprising a pair of`endless chains carrying box ejecting devices, sprocket Wheels overwhich said chains move, a pinion connected with said sprocket wheels,and an oscillating gear segment -meshing with said pinion whereby thechains are given'a back and forth" movement in combination with a trackadapted to receive the'nished box, said track being parallel to themovement of the chains.

22. In a box covering machine, a pair of units adapted to actsimultaneously upon opposite sides of a box to apply a wrapper thereto,eachv unit as a whole and parts thereof being independently adjustableto adapt the units to act upon two box sides of different qdimensionssimultaneously.

23. In a box covering machine, the combination of a pair of plungersbetween which the box is held, said plungers having Va movement whichcarries the box past the various cover-applying devices, andcoverapplying devices arrangedy in units independently adjustable todiderent positions along the path of said plungers, parts of each unitbeing also independently adjustable to adapt them to boxes whose wallsare of different heights. j

24. ln a box covering machine, the combination of a pair of units, eachcomprising cover-applying devices and being adjustable with respect toeach other, and a box ejecting mechanism, parts of which are comprlsedin one unit and other parts in the other unit, whereby adjustment of theej ector will be made when the units are adjusted.

25. ln a box covering machine, the combination of a holder for the boxwhile its cover is being applied, a stationary delivery platform for thebox, and means whereby .the box will-be deposited upon the platform whenreleased by the holder.

l26. ln a box covering machine, the combination of a holder for the boxwhile its cover is being applied, a stationary delivery platform for thebox, means whereby the box will be deposited by the holder upon theplatform, and a reciprocating device adapted to engage the box when sodeposited and carry it out of the machine. j

27. A box covering machine comprising a pair fof plungers between whichthe box is gripped and by which it is carried in a definite path, andcover axing mechanism embodying a stationary pressure resisting bar, andadjustable spacing plates on said bar movable laterally forlthe `purposeset,

forth.

28. A box coveringl machine comprising plunger mechanism for directing abox and presenting sameA to covering devices, cover 'an'ixing mechanismsarranged in two independent units each comprising a brush holder, abrush and means for moving said holder and brush at right angles to themovement of the plunger and box and also to a limited extent in thedirection of travel of plunger and box and means for adjusting saidunits to operate respectively and simultaneously on box walls of dierentsize.

29. A box coverin f machine comprising plunger mechanism or moving anddirecting a box, a resistance bar provided with adjustable pressure andspacing plates adapted to Contact with the outer side of box when pairof grooves inopposite faces, in combinatiomwith a plurality of contactplates engaging the said grooves and adjustable to different lpositionsthereon.

31. A box covering machine comprising a pair of plungers between whichthe box is gripped and by which it is carried in a defi-v v nite path, aresistance bar provided with pressure and spacing plates and means foradjusting any number of said plates to con` form to length of box beingoperated on.

In witness whereof, we subscribe our signatures, inthe presence of twowitnesses.

JOHN P. MARKERT, ROBERT s. BOLGER.

Witnesses:

WALDo M. CHAPIN, JULE ZELEUDO.

